I created a model and then tried to add armature. But when I'm moving the rig, some of it (the mouth) stays in the place and I don't know why. Anyone know why it could happen and how to fix it?

These pictures illustrate the problem (don't mind the eye):

Rest pose:

enter image description here

When rotating a bone:

enter image description here

Thank you!

  • $\begingroup$ See if this answers your question. If not, leave a comment and we can help you further. :) $\endgroup$ – Thom Blair III May 7 '14 at 5:23
  • $\begingroup$ Did that answer solve your problem? $\endgroup$ – Thom Blair III May 7 '14 at 23:24
  • $\begingroup$ Make sure that the mouth vertices are part of the vertex group for that particular bone. Also, make sure that those vertices have non-zero weights for that bone. $\endgroup$ – Justin Jul 15 '14 at 23:24

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